Occasionally you are obliged to view the Exif information generated by the cameras. To do that, you need a tool like EXIF-O-Matic. This is a program designed to view the Exif information contained in the documents generated by digital cameras on a Mac. It allows you to know the focal length, the used aperture, the exposure time, the camera brand and much more. Data can be saved as TXT or HTML depending on the needs of the user.